A senior UN official in Sudan says she is deeply troubled by reports of "atrocious crimes" in the central Gezira state, including the mass killing of civilians by the paramilitary Rapid Support Forces (RSF).
Clementine Nkweta-Salami's comments came after an activist group said that at least 124 people were killed by the RSF in attacks on villages over the past week.
The RSF has denied targeting civilians, saying its fighters are clashing with militias armed by the military.
The 18-month conflict in Sudan has killed tens of thousands of people and displaced more than 11 million.
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